Introduction to Jimp Logger

Jimp Logger is a powerful and flexible logging utility for Node.js applications, designed to be both easy to use and customizable to fit various logging needs. Whether you’re working on a small project or a large-scale application, Jimp Logger provides a suite of features and APIs to help you effectively log, monitor, and debug your application.

Core APIs of Jimp Logger

Jimp Logger offers a wide range of APIs to give you full control over how you handle logging in your application. Below are some of the most commonly used APIs with examples.

Basic Logging

  const JimpLogger = require('jimp-logger');
  const logger = new JimpLogger();

  logger.log('This is a basic log message');
  logger.info('This is an info message');
  logger.warn('This is a warning message');
  logger.error('This is an error message');

Setting Log Levels

  const JimpLogger = require('jimp-logger');
  const logger = new JimpLogger({ level: 'warn' });

  logger.debug('This debug message will not be logged');
  logger.warn('This warning message will be logged');

Custom Formatting

  const JimpLogger = require('jimp-logger');
  const logger = new JimpLogger({
    format: ({ level, message }) => `${new Date().toISOString()} [${level.toUpperCase()}]: ${message}`
  });

  logger.info('Custom formatted info message');

Writing to Files

  const JimpLogger = require('jimp-logger');
  const logger = new JimpLogger({
    transports: [
      { type: 'file', filename: 'app.log' }
    ]
  });

  logger.info('This message will be written to app.log');

JSON Logging

  const JimpLogger = require('jimp-logger');
  const logger = new JimpLogger({
    format: ({ level, message }) => JSON.stringify({ timestamp: new Date(), level, message })
  });

  logger.info('This is a JSON formatted message');

Multiple Transports

  const JimpLogger = require('jimp-logger');
  const logger = new JimpLogger({
    transports: [
      { type: 'console' },
      { type: 'file', filename: 'app.log' }
    ]
  });

  logger.info('This message will appear in console and app.log');

Example Application with Jimp Logger

  const express = require('express');
  const JimpLogger = require('jimp-logger');

  const app = express();
  const logger = new JimpLogger({ level: 'info' });

  app.use((req, res, next) => {
    logger.info(`Incoming request ${req.method} ${req.url}`);
    next();
  });

  app.get('/', (req, res) => {
    logger.log('Handling GET request for /');
    res.send('Hello, world!');
  });

  app.use((err, req, res, next) => {
    logger.error(`Error encountered: ${err.message}`);
    res.status(500).send('Something went wrong!');
  });

  app.listen(3000, () => {
    logger.info('Server listening on port 3000');
  });

By incorporating Jimp Logger in your application, you can greatly enhance your logging capabilities, making it easier to monitor and debug your Node.js applications effectively.

Happy logging!

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